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org.apache.jetspeed.services.registry
Class DatabaseRegistryService

java.lang.Object
  |
  +--org.apache.turbine.services.BaseInitable
        |
        +--org.apache.turbine.services.BaseService
              |
              +--org.apache.turbine.services.TurbineBaseService
                    |
                    +--org.apache.jetspeed.services.registry.DatabaseRegistryService

All Implemented Interfaces:

FileRegistry, org.apache.turbine.services.Initable, RegistryService, org.apache.turbine.services.Service

public class DatabaseRegistryService

extends org.apache.turbine.services.TurbineBaseService

implements RegistryService, FileRegistry

This is an implementation of the RegistryService based on the Jetspeed Database Persistence Manager

Version:

$Id: DatabaseRegistryService.java,v 1.6 2004/02/23 03:31:50 jford Exp $

Author:

David Sean Taylor, Suchisubhra Sinha

Field Summary

static int	DEFAULT_VERBOSE
static java.lang.String	SERVICE_NAME The name of this service

Fields inherited from class org.apache.turbine.services.BaseService

configuration, name, properties, serviceBroker

Fields inherited from class org.apache.turbine.services.BaseInitable

initableBroker, isInitialized

Fields inherited from interface org.apache.jetspeed.services.registry.FileRegistry

DEFAULT_REFRESH

Constructor Summary

DatabaseRegistryService()

Method Summary

void	addEntry(java.lang.String regName, org.apache.jetspeed.om.registry.RegistryEntry entry) Add a new RegistryEntry in the named Registry.
org.apache.jetspeed.om.registry.RegistryEntry	createEntry(java.lang.String regName) Creates a new RegistryEntry instance compatible with the current Registry instance implementation
void	createFragment(java.lang.String name, java.io.Reader reader, boolean persistent) Read and unmarshal a fragment in memory
org.apache.jetspeed.om.registry.Registry	get(java.lang.String regName) Returns a Registry object for further manipulation
org.apache.jetspeed.om.registry.RegistryEntry	getEntry(java.lang.String regName, java.lang.String entryName) Returns a RegistryEntry from the named Registry.
java.util.Map	getFragmentMap()
java.util.Enumeration	getNames() List all the registry currently available to this service
void	init() Late init method from Turbine Service model
void	init(javax.servlet.ServletConfig conf) This is the early initialization method called by the Turbine Service framework
void	loadFragment(java.lang.String file) Load and unmarshal a RegistryFragment from the file
void	refresh() Refresh the state of the registry implementation.
protected void	refresh(java.lang.String regName) Scan all the registry fragments for new entries relevant to this registry and update its definition.
void	removeEntry(java.lang.String regName, java.lang.String entryName) Deletes a RegistryEntry from the named Registry This is a convenience wrapper around Registry.removeEntry(org.apache.jetspeed.om.registry.RegistryEntry)
void	removeFragment(java.lang.String file) Remove a fragment from storage
void	saveFragment(java.lang.String file) Marshal and save a RegistryFragment to disk
void	shutdown() This is the shutdown method called by the Turbine Service framework
protected void	updateFragment(java.lang.String name, org.apache.jetspeed.services.registry.RegistryFragment fragment) Updates a fragment in storage and the associated entryIndex

Methods inherited from class org.apache.turbine.services.TurbineBaseService

init, init

Methods inherited from class org.apache.turbine.services.BaseService

getConfiguration, getName, getProperties, getServiceBroker, setName, setServiceBroker

Methods inherited from class org.apache.turbine.services.BaseInitable

getInit, getInitableBroker, setInit, setInitableBroker

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.turbine.services.Service

getConfiguration, getName, getProperties, setName, setServiceBroker

Methods inherited from interface org.apache.turbine.services.Initable

getInit, init, setInitableBroker

Field Detail

SERVICE_NAME

public static java.lang.String SERVICE_NAME

The name of this service

DEFAULT_VERBOSE

public static final int DEFAULT_VERBOSE

See Also:

Constant Field Values

Constructor Detail

DatabaseRegistryService

public DatabaseRegistryService()

Method Detail

get

public org.apache.jetspeed.om.registry.Registry get(java.lang.String regName)

Returns a Registry object for further manipulation

Specified by:

get in interface RegistryService

Parameters:

regName - the name of the registry to fetch

Returns:

a Registry object if found by the manager or null

getNames

public java.util.Enumeration getNames()

List all the registry currently available to this service

Specified by:

getNames in interface RegistryService

Returns:

an Enumeration of registry names.

createEntry

public org.apache.jetspeed.om.registry.RegistryEntry createEntry(java.lang.String regName)

Creates a new RegistryEntry instance compatible with the current Registry instance implementation

Specified by:

createEntry in interface RegistryService

Parameters:

regName - the name of the registry to use

Returns:

the newly created RegistryEntry

getEntry

public org.apache.jetspeed.om.registry.RegistryEntry getEntry(java.lang.String regName,
                                                              java.lang.String entryName)

Returns a RegistryEntry from the named Registry. This is a convenience wrapper around Registry.getEntry(java.lang.String)

Specified by:

getEntry in interface RegistryService

Parameters:

regName - the name of the registry

entryName - the name of the entry to retrieve from the registry.

Returns:

a RegistryEntry object if the key is found or null

addEntry

public void addEntry(java.lang.String regName,
                     org.apache.jetspeed.om.registry.RegistryEntry entry)
              throws RegistryException

Add a new RegistryEntry in the named Registry. This is a convenience wrapper around Registry.addEntry(org.apache.jetspeed.om.registry.RegistryEntry)

Specified by:

addEntry in interface RegistryService

Parameters:

regName - the name of the registry

entry - the Registry entry to add

Throws:

Sends - a RegistryException if the manager can't add the provided entry

RegistryException

removeEntry

public void removeEntry(java.lang.String regName,
                        java.lang.String entryName)

Deletes a RegistryEntry from the named Registry This is a convenience wrapper around Registry.removeEntry(org.apache.jetspeed.om.registry.RegistryEntry)

Specified by:

removeEntry in interface RegistryService

Parameters:

regName - the name of the registry

entryName - the name of the entry to remove

init

public void init(javax.servlet.ServletConfig conf)
          throws org.apache.turbine.services.InitializationException

This is the early initialization method called by the Turbine Service framework

Overrides:

init in class org.apache.turbine.services.TurbineBaseService

org.apache.turbine.services.InitializationException

getFragmentMap

public java.util.Map getFragmentMap()

Specified by:

getFragmentMap in interface FileRegistry

Returns:

a Map of all fragments keyed by file names

init

public void init()
          throws org.apache.turbine.services.InitializationException

Late init method from Turbine Service model

Specified by:

init in interface org.apache.turbine.services.Initable

Overrides:

init in class org.apache.turbine.services.TurbineBaseService

org.apache.turbine.services.InitializationException

shutdown

public void shutdown()

This is the shutdown method called by the Turbine Service framework

Specified by:

shutdown in interface org.apache.turbine.services.Initable

Overrides:

shutdown in class org.apache.turbine.services.TurbineBaseService

refresh

protected void refresh(java.lang.String regName)

Scan all the registry fragments for new entries relevant to this registry and update its definition.

Parameters:

regName - the name of the Registry to refresh

refresh

public void refresh()

Refresh the state of the registry implementation. Should be called whenever the underlying fragments are modified

Specified by:

refresh in interface FileRegistry

loadFragment

public void loadFragment(java.lang.String file)

Load and unmarshal a RegistryFragment from the file

Specified by:

loadFragment in interface FileRegistry

Parameters:

file - the absolute file path storing this fragment

createFragment

public void createFragment(java.lang.String name,
                           java.io.Reader reader,
                           boolean persistent)

Read and unmarshal a fragment in memory

Specified by:

createFragment in interface FileRegistry

Parameters:

name - the name of this fragment

persistent - whether this fragment should be persisted on disk in the registry

reader - the reader to use for creating this fragment

saveFragment

public void saveFragment(java.lang.String file)

Marshal and save a RegistryFragment to disk

Specified by:

saveFragment in interface FileRegistry

Parameters:

file - the absolute file path storing this fragment

removeFragment

public void removeFragment(java.lang.String file)

Remove a fragment from storage

Specified by:

removeFragment in interface FileRegistry

Parameters:

file - the absolute file path storing this fragment

updateFragment

protected void updateFragment(java.lang.String name,
                              org.apache.jetspeed.services.registry.RegistryFragment fragment)

Updates a fragment in storage and the associated entryIndex